Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 4556-23-4, is researched, Molecular C5H5NS, about Distinguishing Enantiomers by Tip-Enhanced Raman Scattering: Chemically Modified Silver Tip with an Asymmetric Atomic Arrangement, the main research direction is distinguishing enantiomer tip enhanced raman scattering modified silver tip; Raman spectroscopy; charge transfer; chirality; hydrogen bonding; silver.Product Details of 4556-23-4.
Discrimination between enantiomers is achieved by tip-enhanced Raman scattering (TERS) using a silver tip that is chem. modified by an achiral para-mercaptopyridine (pMPY) probe mol. Differences in the relative intensities of the pMPY spectra were monitored for three pairs of enantiomers containing hydroxy (-OH) and/or amino (-NH2) groups. The N: or N+-H functionality of the pMPY-modified tip participates in hydrogen-bond interactions with a particular mol. orientation of each chiral isomer. The asym. arrangement of silver atoms at the apex of the tip induces an asym. elec. field, which causes the tip to become a chiral center. Differences in the charge-transfer (CT) states of the metal-achiral probe system in conjunction with the asym. elec. field produce different enhancements in the Raman signals of the two enantiomers. The near-field effect of the asym. elec. field, which depends on the number of analyte functional groups capable of hydrogen-bond formation, improves the degree of discrimination.
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Reference:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts